Is there a service that monitors multiple URLs' rank for a search term over a period of time? I have about 200 domains and I'd like to know how they are all ranking for different search terms. Make sense?
do some seo for that and do social bookmarking for that. Use some automated tools then only you can rank
you can use this tools http://link.ezer.com since all move for free there is nothing to worry about to pay,hit and do your own research and other recomendations is this tools and also Seocentro.com
You can use http://www.rockinseo.com/ they even email you a weekly report showing your changes in Google, Yahoo and Msn